Em Thu, 04 Jun 2009 17:20:50 +0800
"figo.zhang" escreveu:
> On Thu, 2009-06-04 at 11:18 +0200, Laurent Pinchart wrote:
> > Hi,
> >
> > On Thursday 04 June 2009 06:20:07 figo.zhang wrote:
> > > The function video_register_device() will call the
> > > video_register_device_index(). In this functio
On Friday 05 June 2009 04:51:36 Figo.zhang wrote:
> On Thu, 2009-06-04 at 11:27 +0200, Hans Verkuil wrote:
> > > On Thu, 2009-06-04 at 11:18 +0200, Laurent Pinchart wrote:
> > >> Hi,
> > >>
> > >> On Thursday 04 June 2009 06:20:07 figo.zhang wrote:
> > >> > The function video_register_device() will
On Thu, 2009-06-04 at 11:27 +0200, Hans Verkuil wrote:
> > On Thu, 2009-06-04 at 11:18 +0200, Laurent Pinchart wrote:
> >> Hi,
> >>
> >> On Thursday 04 June 2009 06:20:07 figo.zhang wrote:
> >> > The function video_register_device() will call the
> >> > video_register_device_index(). In this functi
On Thu, 2009-06-04 at 11:18 +0200, Laurent Pinchart wrote:
> Hi,
>
> On Thursday 04 June 2009 06:20:07 figo.zhang wrote:
> > The function video_register_device() will call the
> > video_register_device_index(). In this function, firtly it will do some
> > argments check , if failed,it will return
> On Thu, 2009-06-04 at 11:18 +0200, Laurent Pinchart wrote:
>> Hi,
>>
>> On Thursday 04 June 2009 06:20:07 figo.zhang wrote:
>> > The function video_register_device() will call the
>> > video_register_device_index(). In this function, firtly it will do
>> some
>> > argments check , if failed,it w
On Thu, 2009-06-04 at 11:18 +0200, Laurent Pinchart wrote:
> Hi,
>
> On Thursday 04 June 2009 06:20:07 figo.zhang wrote:
> > The function video_register_device() will call the
> > video_register_device_index(). In this function, firtly it will do some
> > argments check , if failed,it will return
Hi,
On Thursday 04 June 2009 06:20:07 figo.zhang wrote:
> The function video_register_device() will call the
> video_register_device_index(). In this function, firtly it will do some
> argments check , if failed,it will return a negative number such as
> -EINVAL, and then do cdev_alloc() and devic
The function video_register_device() will call the
video_register_device_index().
In this function, firtly it will do some argments check , if failed,it will
return a
negative number such as -EINVAL, and then do cdev_alloc() and
device_register(), if
success return zero. so video_register_devic
For video_register_device(), it return zero means register success.It would be
return zero
or a negative number (on failure),it would not return a positive number.so it
have better to
use this to check err:
int err = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
if (err != 0)
